Mechanism for operating intermittingly-rotating shafts.



No. 634.068. Patented Oct. 3, 1899.

H. W. PORTER.

IEGH RNISI FUR UPERATING INTERIITTINGLY ROTATING SHAFTS;

(pplication filed June 21, 1899.

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No. 634,068. .Patentad Oct. 3,1899.

H. W. PORTER.

IEGHMIISI FOR OPERATING IIITERITTTIN6LY ROTATING SHIFTS.

(Appliatica and June 21, 1299.1

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' UNITED STnTns PATENT OFFICE.

HENRY 'WQPOR'TER, OF FORESTVILLE, CONNE TIC T, nsslenon To PETER T.FARRELL AND JOHN M. TOOHEY,OENEW BRITA1N,CONNEOTICUT;

MECHANISM FQROPERATING INTERMlTTINGLY-ROTATING.SHA'FTS.

sPEcIFrcnTron forming part of Letters Patent ne'eeaoes, dated October3,1899.

Application filed June 21, 1899. Serial No. 721,370. (No model-l To allwhom it may concern:

Be it known that I, HENRY PORTER, a citizen of the UnitedStat'es,residing' at Forestville, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements in-Mechanism for OperatingIntermittingly-Rotating Shafts, of which thefollowing is 'a specification.

My invention relates to mechanism for operating intermittingly-rotatingshafts; and the objects of my invention are simplicity in constructionand eificiency in operation.

In the accompanying drawings, Figure 1 is a front elevation of mymachine, the upper portion of the standards being represented as broken0E. Fig.- 2 is a side elevation of the same, showing the left-hand end.Fig. 3' is a side elevation as seeu from theright, but with theright-hand standard and movement-plate removed in order to better showthe other parts. Figs is a sectional side elevation on the line a: m,Fig. 1. Fig. 5 is a detached and enlarged side elevation of one of thetripsprings, and Fig. 6 is a'detached view of a part of the stop-diskwith one of the. tripsprings removed in order to show the socket forsecuring the same to the said stop-disk.

My machine is applicable for use in various mechanisms where aniutermittingly-rotating shaft is employed. In the form shown it isespecially designed for operating intermittingly the rotary shaft A of amachine for exhibiting transparencies, the said shaft being providedwith heads 7 7 for carrying the transparencies, which may be arranged inany suitable holder mounted on and carried by the said heads. The sideears o'r'lugs 8 on the said heads are to prevent the holder fromworking. laterally out of place Any other devices for any desiredpurpose in connection with an intermittingly-rotating shaft may besubstituted on the said shaft for the 7 heads 7 7. Y

B, Fig. 1, designates a base to which the standards 9 are secured. Thetops of the standards may be of any desired shape and extend to anydesired height," according to circumstances. For the purposes ofgnyinvention it is only necessary that the righthand standard, asviewed inFig. 1, shall extend high enough to support the time-train O and theother high enough to support the spring-motor D, and I have thereforerepresented said standards asbroken off just above these trains.

My machine is especially designed to operate the shaft A. Said shaft ismounted to revolve in suitable bearings on the standards 9 9, the saidbearings onone side being formed directly in the movement plate 10 ofthe spring-motor train D and on the other side in themovement-plate 11of the train 0. The standards are centrally and vertically slotted, asat 12, whereby the respective trains or movements 0 D or other parts maybe adjustably secured thereon by means of screws 13 and washers 14,-Fig. 2, the said screws passing through the washers and standards anddinary construction, and any other known driving mechanism that willhave a tendency said motor-train D is composed of a frame, two springs15, main wheels 16, pinions 17, and wheel 18, that engages with anddrives the pinion 19 on the shaft A. The parts of the said wheels andpinions that are hidden by other parts in Fig. 2 are indicated by brokencircles in said figure. Rigidly mounted on the opposite end of the shaftA is the stopdisk E, having upon one side a series of stoppins20 and onits other side a corresponding series of trips 21, pivoted to said disk,as at 22, with their beveled ends projecting there from. Said trips arenormally forced against their steps .23 by means of the springs 24..These springs are rigidly secured by one end to the stop-disk E in anyproper manner. In Figs. 5 and 6 I have illustrated one way of securingsaid springs to said disk. Each spring is provided at its heel with alug 25, and the diskis provided with slits or sockets 26, into which thesaid lugs may be forced with sufficient friction to hold them in place.The rigid ends of the springs are thus secured to the stop-disk, whichserve as stops to limit shaft A within it, as shown; but it is onlynecessary that it shall be fixed relatively to the said movement-plate.The companion movement-plate 27 for the said train 0 is only largeenough to confine the parts belonging specifically to the said train.Upon a post 28 on the plate 11 I mount the angle-lever 29 30, of which29 isits stopping-arm, and 30 its tripping-arm, thelatter being providedwith a lateral wing 31, that extends over the edge of the disk E and itstrip for engaging the same, as hereinafter described. Rigidly connectedwith this angle-lever is a tripping-lever 32, the curved upper end ofwhich extends upwardly to the fly-wheel or time-train in position forbeing acted upon by the trip-pins 33 of the wheel 34 of the said trainat regular intervals of time.

I call the train 0 a time-train, because it is a spring-motor whosemotion is retarded or prolonged by a fly-wheel for making the train runslowly for a considerable time and to revolve its Wheels at a regularspeed, so that one of its wheels 34, earring trip-pins 33, will revolvein a given predetermined time and act upon the tripping mechanismhereinafter described to operate it at regular intervals of time. Asshown, said train consists mainly of a frame, two main wheels, andsprings 36, and wheels 37 34: 39 40, fly-wheel ii, andconnectingpinions, the same being a well-known train and for which otheranalogoustrains may be substituted. The anglelever 29 30'is providedwith a spring 38, which has a constant tendency to force the said leverin a direction to disengage its stoppingarm from the stop-pins 20 of thestop-disk E. The two members of the angle-lever are so related to eachother and the stop-disk that when the tripping-arm 30 has its wing 31 inengagement with the edge of said disk the end of the stopping-arm willbe carried out of the path of the stop-pins 20, and as soon as the tripsact to slightly elevate the said wing 31 from said disk, as shown inFigs. 3 and 4, the said arm will be in the path of the said stop-pins,and consequently will engage one of the said stop-pins and prevent themotor D from driving the shaft A so long as the said arm remains in thepath of the said pin. When the time-train is' in motion, the wheel 34:revolves slowly, and at each third of a revolution (when the wheel hasthree trip-pins) one of the trip-pins 33 engages the trip-lever32 andmoves said lever in the direction to lift the tripping-arm 30, so as tolift it over the end of the trip 21 with which it may be engaged. Thespring 2a immediately moves said trip out of the way of the wing 31,While the stopdisk is still held by the stop-lever 29 in engagement withone of the stop-pins. Soon after the trip is released the trip-pin 33passes the downwardly-projecting curved upper end of the trip-lever 32and releases said lever and connected angle-lever to the force of itsspring 38, carrying said levers to the position indicated by brokenlines in Fig. 3, the wing 31 of the tripping-arm 3O falling upon theedge of the stop-disk, while the stop-lever disengages the stop-pin 20to release the stop-disk to the force of the motor D, so that said shaftmoves forwardly. The succeedingtrip will engage the wing 31 of thetripping-arm 30 and move said trip on its axis in the direction tocompress its spring as far as the said spring will permit, and then saidtrip will force the tripping-arm upwardly and bring the stop-lever intothe path of the pins 20, so as to arrest the movement of the-stop-diskafter it has moved one-sixth of a revolution, this position of the saidparts being illustrated in connection with the upper one of the trips inFig. 4. At the next third of a revolution of the wheel 34 another one ofthe pins 33 engages the trip-lever 32 and again releases the shaft A tothe action of its driving mechanism, permitting it to move another sixthof a revolntion, as before described, and so on repeat edly as long asthe train is in motion and power is applied to the drive-shaft A afraction of a revolution every time it-is released by the said fly-wheeltrain. In the particular machine from which the accompanying drawingswere made the shaft A moves forward regularly once in every fiveseconds. Its movement is made in less than one second, so that itremains at rest fully four seconds between each intermittent movement.

While I prefer to lift and release the tripping-arm of the angle-leverby the time-train, it is evident that the action of the said tripping-arm relatively to the stop-disk would be the same if the saidtripping-arm were lifted and released by other mechanism or by hand.

It is apparent that some changes from the specific construction hereindisclosed may be made, and therefore I do notwish to be understood aslimiting myself to the precise form of construction shown and described,but desire the liberty to make such changes in working my invention asmay fairly come within the spirit and scope ofthe same.

I claim as my invention 1. The combination of the stop-disk E having aseries of stop-pins, with a series of spring-pressed trips pivoted onsaid disk, the angle-lever 29,30, for acting on the said pins and trips,and a time-train for controlling the action of the said angle -lever,substantially as described.

2. The combination of the shaft A, a motor acting to drive the saidshaft when released, a stop-disk having a series of stop-pins, a seriesof spring-pressed trips pivoted on said disk, the angle-lever for actingon the said pins and trips, a trip-lever, rigidly secured to andextending beyond the reach of the said angle-lever, a spring forpressing the said angle-lever in one direction and a trippin wheelrevolving at a given speed for acting on the said trip-lever at regularintervals of time, substantially as described.

3. The combination of the stop-disk having a series of stop-pins and aseries of springpressed trips projecting from its edge, and the of saiddisk, the angle-lever 29, 30, for en-' gaging the said stop-pinsandtrips, a spring for forcing the said angle-lever in'the direction torelease it from the said stop-pins and 10 a time-train for operating thesaid angle-1e ver at regular intervals of time, substantially asdescribed.

HENRY W. PORTER.

Witnesses:

LOREN D. PENFIELD, M. P. MONARYJ

